渔业科学进展Issue(5)：135-144,10.DOI:10.11758/yykxjz.20140520
棕点石斑鱼（♀）×鞍带石斑鱼（♂）杂交子代胚胎及仔稚幼鱼发育的跟踪观察
Embryonic and Morphological Development in the Larva, Juvenile, and Young Stages of Epinephelus fuscoguttatus (♀)E. lanceolatus(♂)
摘要
Abstract
The current study investigated the Epinephelus fuscoguttatus(♀) × E. lanceolatus(♂) hybrid embryo and larvae in the terms of the morphological characteristics to provide a basis for the future breeding. The results show that embryonic development required 25 h 25 min at 27−28℃. The embryonic developmental process included five stages:cleavage stage, blastula stage, gastrula stage, nerve stage, and organogenesis stage. The post-embryonic development included larval, juvenile, and young fish stages at (27±0.5)℃, salinity 30, and pH 8 based on the features of the yolk sac, second dorsal fin spine, pelvic fin spine, scales, and body color. Larval was further divided into early and late larval larvae according to the presence or absence of yolk sac. Newly-hatched to 4-day was the early larvae, and larvae hatching yolk sac completely disappeared at 5 d. Fifty percent of larvae entered larval period at 32 d. Fifty percent larval completed the metamorphosis that developed into juvenile fish. The average total length of newly-hatched larvae was (1.65±0.11) mm, reaching (75.47±0.19) mm at 70 d. These results indicated that the hybrid offspring from conception to the later stages are healthy and normally-grown and developed; the disease-resistant heterosis had the appearance of“Epinephelus fuscoguttatus head and E. lanceolatus tail”.关键词
棕点石斑鱼(♀)×鞍带石斑鱼(♂)/胚胎发育/仔/稚/幼鱼/形态发育Key words
Epinephelus fuscoguttatus(♀)×E.lanceolatus(♂)/Embryonic development/Larvae, juveniles, young fish/Morphological development分类
农业科技引用本文复制引用
陈超,刘江春,孔祥迪,李炎璐,宋振鑫,贾瑞锦,于欢欢,翟介明,马文辉,庞尊方..棕点石斑鱼（♀）×鞍带石斑鱼（♂）杂交子代胚胎及仔稚幼鱼发育的跟踪观察[J].渔业科学进展,2014,(5):135-144,10.基金项目
科技部国际合作项目(2012DFA30360)和国家科技支撑项目(2011BAD13B01)共同资助。 （2012DFA30360）
